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alerthr under Sleep Monitoring/Polysomnography/Signal Quality in HEARTBEAT variables
Heart rate >= 150 or <=30 (no A-Fib/Flutter) for 2 consecutive minutes
afibincident under Clinical Data/Incident Outcomes/Cardiovascular Diseases in SHHS variables
Variable created as part of the analysis for Tung et al. 2017 (PubMed ID: 28668820). Incident AF was considered present if AF was identified on a 12-lead ECG obtained at the second SHHS exam or was adjudicated by the parent cohorts at any time between the baseline PSG and the final follow-up date for AF ascertainment of June 30, 2006.
afibprevalent under Clinical Data/Incident Outcomes/Cardiovascular Diseases in SHHS variables
Variable created as part of the analysis for Tung et al. 2017 (PubMed ID: 28668820). Prevalent AF was defined by any of the following: a positive response to the question 'Has a doctor ever told you that you have or had atrial fibrillation'; AF identified on resting 12-lead ECG at the baseline SHHS exam; or if the parent study identified AF documented in the medical record before the SHHS baseline exam.